In response to the heat dissipation problem during the driving process of a car,this article takes a certain se-dan model,245/45/R19,as the research object and constructs an aerodynamic vehicle model.Using the three-dimensional incompressible Reynolds averaged N-S equation and RNG k-ε.The turbulence model conducted convective heat transfer a-nalysis on the wheels under vehicle conditions,and studied the influence of body structures such as front and rear wheel arches,front and rear air curtains,etc.on the heat dissipation of the wheels,providing relevant guidance for improving the heat dissipation ability of the wheels.The results show that inward retraction of the front and rear wheel arches increases the average convective heat transfer coefficient on the surface of the front and rear wheels by 7.82％and 7.44％,respec-tively;Adding front and rear air curtains can significantly improve the convective heat transfer coefficient at the tire sur-face of the car.The opening of the front air curtain at the tire surface can increase the convective heat transfer coefficient of the front tire surface by 21.64％.When the opening of the rear air curtain is on the outside of the wheel,it can increase the convective heat transfer coefficient of the rear tire surface by 21.02％.
wheelflow fieldconvective heat transfer coefficientcomputational fluid dynamicsnumerical simulation
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